{
  "url": "https://openlegislation.uk/eu-regulation-2017-1151/annex-Sub/6b/division/division-3./division-3.1.",
  "json_url": "https://openlegislation.uk/eu-regulation-2017-1151/annex-Sub/6b/division/division-3./division-3.1..json",
  "legislation": "eur/2017/1151",
  "legislation_title": "Commission Regulation (EU) 2017/1151 of 1 June 2017 supplementing Regulation (EC) No 715/2007 of the European Parliament and of the Council on type-approval of motor vehicles with respect to emissions from light passenger and commercial vehicles (Euro 5 and Euro 6) and on access to vehicle repair and maintenance information, amending Directive 2007/46/EC of the European Parliament and of the Council, Commission Regulation (EC) No 692/2008 and Commission Regulation (EU) No 1230/2012 and repealing Commission Regulation (EC) No 692/2008 (Text with EEA relevance)",
  "legislation_url": "https://openlegislation.uk/eu-regulation-2017-1151",
  "path": "annex/Sub/6b/division/division/3./division/3.1.",
  "kind": "division",
  "number": "3.1",
  "heading": "Calculation of the actual/measured and target power at the wheels",
  "text": "The power and the forces at the wheels from the target and actual/measured speed shall be calculated by applying the following equations:\nFi=f0+f1×Vi+Vi−12+f2×Vi+Vi−124+TM+mr×ai\nPi=Fi×Vi+Vi−13,6×2×0,001\nFmi=f0+f1×Vmi+Vmi−12+f2×Vmi+Vmi−124+TM+mr×ami\nPmi=Fmi×Vmi+Vmi−13,6×2×0,001\nai=Vi−Vi−13,6×ti−ti−1\nami=Vmi−Vmi−13,6×ti−ti−1\nwhere:\nFiis the target driving force during the period from (i – 1) to (i), N;\nFmiis the actual/measured driving force during the period from (i – 1) to (i), N;\nPiis the target power during the period from (i – 1) to (i), kW;\nPmiis the actual/measured power during the period from (i – 1) to (i), kW;\nf0, f1, f2are the road load coefficients from Sub-Annex 4, N, N/(km/h), N/(km/h)2;\nViis the target speed at time (i); km/h;\nVmiis the actual/measured speed at time (i); km/h;\nTMis the test mass of the vehicle, kg;\nmris the equivalent effective mass of rotating components in accordance with paragraph 2.5.1. of Sub-Annex 4, kg;\naiis the target acceleration during the period from (i-1) to (i), m/s2;\namiis the actual/measured acceleration during the period from (i – 1) to (i), m/s2;\ntiis the time, s.",
  "extent": null,
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "F",
      "label": "F1",
      "text": "Inserted by Commission Regulation (EU) 2018/1832 of 5 November 2018 amending Directive 2007/46/EC of the European Parliament and of the Council, Commission Regulation (EC) No 692/2008 and Commission Regulation (EU) 2017/1151 for the purpose of improving the emission type approval tests and procedures for light passenger and commercial vehicles, including those for in-service conformity and real-driving emissions and introducing devices for monitoring the consumption of fuel and electric energy (Text with EEA relevance)."
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/eur/2017/1151/annex/Sub/6b/division/division/3./division/3.1.",
    "retrieved_at": "2026-11-01T14:44:48.753743+00:00"
  },
  "licence": "Open Government Licence v3.0",
  "licence_url": "https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/",
  "attribution": "Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives."
}